This week, let’s go underground with Damien Buffet, Project Manager at Equans Tunnels, a company specializing in ventilation for underground spaces. With 15 years of experience and expertise honed on major projects such as the Grand Paris Express, he takes us behind the scenes of a little-known but essential profession.

Have you ever thought about the importance of ventilation when you’re traveling through a tunnel? This simple act hides complex engineering that’s essential to your comfort… but above all, to your safety. Air quality, smoke extraction in the event of a fire, energy efficiency: ventilation plays a vital role in these underground infrastructures.